The New York City-based prank collective is back at it again with their latest stunt involving four sets of twins. 

Improv Everywhere put together a skit on a subway car with four sets of identical twins. 

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The clip starts with a man asking for money to help complete a time machine he's building. At the next stop, the man's future self boards the train to try and talk him out of his wacky idea. That's where the fun begins. 

Watch the Improv Everywhere prank troupe baffle New Yorkers with multiple sets of identical twins.